<?php
    // +----------------------------------------------------------------------
    // | ThinkPHP [ WE CAN DO IT JUST THINK ]
    // +----------------------------------------------------------------------
    // | Copyright (c) 2006~2017 http://thinkphp.cn All rights reserved.
    // +----------------------------------------------------------------------
    // | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
    // +----------------------------------------------------------------------
    // | Author: liu21st <liu21st@gmail.com>
    // +----------------------------------------------------------------------
    namespace think;
    class Env {
        /**
         * 获取环境变量值
         * @param string $name    环境变量名（支持二级 .号分割）
         * @param string $default 默认值
         * @return mixed
         */
        public static function get($name, $default = null) {
            $result = getenv(ENV_PREFIX . strtoupper(str_replace('.', '_', $name)));
            if (false !== $result) {
                return $result;
            } else {
                return $default;
            }
        }
    }
